2x |
4x+1 |
x | 2 |
2x1 |
4x1+1 |
2x2 |
4x2+1 |
2x1(4x2+1) -2x2(4x1+1) |
(4x1+1)(4x2+1) |
(2x2 -2x1)(2x1+x2-1) |
(4x1+1)(4x2+1) |
x | 2 |
2-x |
4-x+1 |
2-x |
4-x+1 |
2-x |
4-x+1 |
|
2x |
4x+1 |
1 | ||
2x+
|
1 |
2x |
5 |
2 |
2 |
5 |
1 |
2 |
2x |
4x+1 |
1 | ||
2x+
|
1 |
2 |
2 |
5 |
1 |
2 |
2 |
5 |
2 |
5 |
1 |
2 |
10 |
3 |
A.增函数 |
B.减函数 |
C.非单调函数 |
D.可能是增函数,也可能是减函数 |
|
1 |
3 |
A.3
| B.-3 | C.
| D.
|
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